Portion of a wheel



FIG. 1 is an elevational view of a first embodiment of a portion of a wheel showing our new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is an elevational view of a second embodiment of a portion of a wheel showing our new design; and,

FIG. 4 is a perspective view thereof.

The broken line showing of a hub element in FIGS. 1 and 2 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a wheel, as shown and described. 